package com.hunzi.controller;


import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.hunzi.domain.OrderItem;
import com.hunzi.domain.Orders;
import com.hunzi.service.OrdersService;
import com.hunzi.utlis.AlipayConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

@Controller
@RequestMapping("/pay")
public class PayController {

    @Autowired
    private OrdersService ordersService;

    //1、跳转支付宝
    @RequestMapping("/order")
    public void order(HttpServletRequest request, HttpServletResponse response, Orders orders) throws UnsupportedEncodingException, AlipayApiException {
        try {
            //获得初始化的AlipayClient
            AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

            //设置请求参数
            AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
            alipayRequest.setReturnUrl(AlipayConfig.return_url);
            alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

            //商户订单号，商户网站订单系统中唯一订单号，必填
            String out_trade_no = new String(request.getParameter("WIDout_trade_no"));
            //付款金额，必填
            String total_amount = new String(request.getParameter("WIDtotal_amount"));
            //订单名称，必填
            String subject = new String(request.getParameter("WIDsubject"));
            //商品描述，可空
            //String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"),"UTF-8");

            alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                    + "\"total_amount\":\"" + total_amount + "\","
                    + "\"subject\":\"" + subject + "\","
                    // + "\"body\":\""+ body +"\","
                    + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

            //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
            //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
            //		+ "\"total_amount\":\""+ total_amount +"\","
            //		+ "\"subject\":\""+ subject +"\","
            //		+ "\"body\":\""+ body +"\","
            //		+ "\"timeout_express\":\"10m\","
            //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
            //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

            //请求
            String result = alipayClient.pageExecute(alipayRequest).getBody();

            //设置输出类型
            response.setContentType("text/html;charset=utf-8");
            response.getWriter().println(result);
            response.getWriter().flush();
            response.getWriter().close();

            //设置订单号
            orders.setOid(out_trade_no);
            ordersService.updateOrdersAddress(orders);


            //输出
            // out.println(result);
            response.getWriter().println(result);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }


    //付款成功的回调方法
    @RequestMapping("/back")
    public String back(HttpServletRequest request, Model model) {
        try {
//获取支付宝GET过来反馈信息
            Map<String, String> params = new HashMap<String, String>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
                String name = (String) iter.next();
                String[] values = (String[]) requestParams.get(name);
                String valueStr = "";
                for (int i = 0; i < values.length; i++) {
                    valueStr = (i == values.length - 1) ? valueStr + values[i]
                            : valueStr + values[i] + ",";
                }
                //乱码解决，这段代码在出现乱码时使用
                valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
                params.put(name, valueStr);
            }
            boolean signVerified = AlipaySignature.rsaCheckV1(params,
                    AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名
            model.addAttribute("signVerified", signVerified);
            //——请在这里编写您的程序（以下代码仅作参考）——
            if (signVerified) {
                //商户订单号
                String out_trade_no = new
                        String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");
                //支付宝交易号
                String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");
                //付款金额
                String total_amount = new
                        String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");
                model.addAttribute("out_trade_no", out_trade_no);
                model.addAttribute("trade_no", trade_no);
                model.addAttribute("total_amount", total_amount);
                //修改订单状态为已经付款
                ordersService.updateOrdersState(out_trade_no , 2);
                //out.println("trade_no:"+trade_no+"<br/>out_trade_no:"+out_trade_no+"<br/>total_amount:"+total_amount);
            } else {
                // out.println("验签失败");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
//——请在这里编写您的程序（以上代码仅作参考）——
        return "pay-success";
    }

}
